trisk Posted July 19, 2017 Share Posted July 19, 2017 I found this odd triangular thing on a shale hash plate along with the typical Permian brachiopods and bryozoans. Link to comment Share on other sites More sharing options...
Al Dente Posted July 19, 2017 Share Posted July 19, 2017 That is one of the plates from a crinoid calyx. Here's an example from an image I found online. 7 Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 19, 2017 Share Posted July 19, 2017 +1 for crinoid calyx plate 1 “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
trisk Posted July 19, 2017 Author Share Posted July 19, 2017 Thanks! Here's another one I'm not sure about: Link to comment Share on other sites More sharing options...
Al Dente Posted July 20, 2017 Share Posted July 20, 2017 It looks like a trilobite pygidium. 1 Link to comment Share on other sites More sharing options...
trisk Posted July 20, 2017 Author Share Posted July 20, 2017 44 minutes ago, Al Dente said: It looks like a trilobite pygidium. Yay, thanks again. That was my guess as well, but given how rare they are glad to have a second opinion. Accidentally left out the scale but it's about 1/3 inch (1cm) wide. Link to comment Share on other sites More sharing options...
trisk Posted July 20, 2017 Author Share Posted July 20, 2017 Here's another object that I'm not sure is just a suggestive looking combination of common things, or something more unusual. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 20, 2017 Share Posted July 20, 2017 12 minutes ago, trisk said: Here's another object that I'm not sure is just a suggestive looking combination of common things, or something more unusual. That's an enrolled trilobite, the dotted part is the head, the segments are the thorax. Also on the stone, is that a shark mouth plate I see? 1 “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
trisk Posted July 20, 2017 Author Share Posted July 20, 2017 21 minutes ago, WhodamanHD said: That's an enrolled trilobite, the dotted part is the head, the segments are the thorax. Also on the stone, is that a shark mouth plate I see? Oh wow, fantastic. Any ideas what kind it might be? The only trilobite remains we've seen before were two pygidia, including the last one. I really hoped this was what it looks like but suspected it could just be a funny looking bryozoan next to some other debris, since there aren't visible eyes or other structures on the part that looks like the cephalon. The other big thing is relatively thin and I assumed it was just a brachiopod, but could be mistaken. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 20, 2017 Share Posted July 20, 2017 Yeah that thing looks brachiopod. I'm no expert, but I think this may be from a shark. Maybe those more familiar with fossils of this type know better. If you have a scribe and are willing to do some prepwork,, that trilo may have some bit strange hiding in the matrix if your lucky. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
trisk Posted July 20, 2017 Author Share Posted July 20, 2017 36 minutes ago, WhodamanHD said: Yeah that thing looks brachiopod. I'm no expert, but I think this may be from a shark. Maybe those more familiar with fossils of this type know better. If you have a scribe and are willing to do some prepwork,, that trilo may have some bit strange hiding in the matrix if your lucky. No air scribe, but the matrix is quite soft and I've had luck with some water and a toothbrush or other small brush. I assumed the round thing was also just a brach but I don't really know. It looks like a shell to me in close up. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 20, 2017 Share Posted July 20, 2017 10 minutes ago, trisk said: No air scribe, but the matrix is quite soft and I've had luck with some water and a toothbrush or other small brush. I assumed the round thing was also just a brach but I don't really know. It looks like a shell to me in close up. I meant a regular engraving scribe, but if a tooth brush works, more power to you. I could be wrong about the shark thing, I've only seen them from pictures. I was hoping others could tell better. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Al Dente Posted July 20, 2017 Share Posted July 20, 2017 I don't believe this is an enrolled trilobite. It looks like a piece of bryozoan next to a piece of brachiopod shell. The common trilobite found around Manhattan is Ditomopyge which doesn't have much ornamentation. Some images of Ditomopyge can be found here. 4 Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 20, 2017 Share Posted July 20, 2017 2 hours ago, Al Dente said: I don't believe this is an enrolled trilobite. It looks like a piece of bryozoan next to a piece of brachiopod shell. The common trilobite found around Manhattan is Ditomopyge which doesn't have much ornamentation. Some images of Ditomopyge can be found here. Wow, it seems that the bryozoans and brachiopods aspire to become their arthropodian friends in an incredibly accurate way. good job catching the flaw! “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
westcoast Posted July 20, 2017 Share Posted July 20, 2017 Agree with Al dente Link to comment Share on other sites More sharing options...
trisk Posted July 21, 2017 Author Share Posted July 21, 2017 Yep that was a bit of a long shot, thanks for putting that theory to rest! Next up is this unfamiliar find, next to a small spiriferid brach (Punctospirifer?). Link to comment Share on other sites More sharing options...
coled18 Posted July 21, 2017 Share Posted July 21, 2017 That reminds me of a Syringopora, but I am not sure. IDK if you have found this website already, but I find it very helpful in identifying a lot of the fossils we find in Manhattan. http://kansasgeology.weebly.com/class-anthozoa.html CD Link to comment Share on other sites More sharing options...
trisk Posted July 21, 2017 Author Share Posted July 21, 2017 7 hours ago, coled18 said: That reminds me of a Syringopora, but I am not sure. IDK if you have found this website already, but I find it very helpful in identifying a lot of the fossils we find in Manhattan. http://kansasgeology.weebly.com/class-anthozoa.html Thanks for the reference, I did stumble on that site once when looking at brachiopods but forgot about it. University of Nebraska-Lincoln also runs a reference site with some of the local Pennsylvanian and Permian fauna; it has really great photos. http://snr.unl.edu/data/geologysoils/fossils/index.aspx It seems like Syringopora and other tabulate corals have open chambers with a regular diameter, while the tubes in the specimen appear to have narrow conical tips. Link to comment Share on other sites More sharing options...
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